Yaesu Musen Co. Ltd. 20251X50 사용자 설명서

FT-2000

Operating Manual

Vertex Standard Co., Ltd.

set up the transceiver for bandwidth diversity reception:

Select the desired mode on the Main band (VFO-A).

Tune to the signal of interest.

Press the [A>B] button to copy this mode and frequency into the Sub band (VFO-B).

If using headphones, set the headphone mixing scheme to the “Con1” mode via the

Menu item “088 rout HEADPHN,” and activate dual reception.

Adjust the [AF GAIN] knob(s) to balance the volume of the two receivers.

Now try manipulating the [SHIFT] and [WIDTH] knobs to observe the interesting

effects of bandwidth diversity.

Polarity Diversity
Similar in concept to the bandwidth diversity capability just described, another
interesting capability of the FT-2000 is the ability to use two different antennas on the
same frequency, using dual reception. for example, you might have a horizontal Yagi on
the main band, and a vertical antenna on the sub band, then lock the two frequencies
together and engage dual reception.
Frequently, the fading observed on the HF bands is not so much a change in ionization
level, but rather a shift in the polarization of the signal as it travels to and from the
ionosphere. Having an opposite-polarization antenna available can fill in the signal
during deep fades, and you may then transmit on whichever antenna is providing the
strongest signal at the moment (see the discussion below on Split Frequency
operation).

P.BACK (Audio Playback) from Main (VFO-A) Receiver
Once engaged by the operator, the FT-2000 begins the automatic recording of the last
30 seconds of incoming receiver audio on the Main band (VFO-A). This capability is
especially useful for confirming a callsign that may have been difficult to copy due to
noise or QRM, etc.

Recording
Press and hold in the [F7(P.BACK)] button for two seconds to initiate recording; “REC”
icon will appears in the display to confirm that recording is in progress. The recorder
will store up to 30 seconds of the Main band (VFO-A) received audio, and will retain
the most-recent 30 seconds of audio on a running basis.
Pressing the [F7(P.BACK)] button once more will halt the recording, and the “REC”
icon will go out.